Vessel



A. MCDOUGALL.

VESSEL.

APPLICATION FILED JULY 29. I918.

Patented July fl 192w.

, K n n a inaacio;

atniran'nnuivienoueatt, or DULUTH, MINNESOTA.

TocZZ whom it may camera:

. vessels, used both on inland waterways, such as canals or the like,and on the open seas.

Vessels for such service must have suili cient depth of hull inproportion to their length and breadth to give proper longitudinalstrength for seaworthiness, and

which depth together with the ordinary fixed superstructures such ascabins and pilot houses, results in a vessel impossible o'l navigationthrough canals spanned by lowlixed bridges, as are in common use.

idea-going vessels having removable superstructures for navigatinguiulerbridgt-is are known in the art, andthe principal. object of mypresent invention is to provide au iih iary superstructures madeadjustable upon the deck oi the vessel to a certain predeterminedheight, torthe safety of the crew while thus navigating the vessel.

It is evident that when the main superstructures are lowered foroperation in a canal, there are times intermediate of the bridges whencertain elevated structures, say for the lights, whistle, smokestack andsteering platform are essential, and these are the structures hereparticularly referred to.

Another object is to provide a form of superstructure which, whenpassing under a bridge, it left upright by mistake, will result in theleast possible damage by its engaging the bridge and whereby the tacklewhich holds the structure upright from the forward side will simply bebroken and the structure prostrated automatically on the deck of thevessel. with no damage except that to the tackle.

Other objects and advantages of the novel construction and arrangementof parts will appear in the further description of the invention.

Referring to the accompanying drawings forming part oi this a'iplication and in Speeificationcf Letters Patent.

Application filed July 29, 1918. Serial No. 247,100.

Patented July 6, 1920..

which like reference characters indicate like parts:

l ligure l is a side elevation of a vessel equipped with removablesuperstructures, and furnished with my improved auxiliarv collapsiblesuperstructm'es. m

Fig. 2 is a similar view oi? the vessel, showing only the ioldablesuperstructures in use as would be employed when the vessel wasnavigating canals.

Fig. is a top plan view. of the vessel, showing only the foldablesuper-structures folded flat upouthe deck, and the other structureremoved.

.liig. 411 is a side elevation of the Fig. 3.

Fig. 5 is an enlarged sideelevation oil the navigators 'ioldableplatform, illustrated in its upright position.

Fig. (3 is an enlarged side. elevation oi the auxiliary 'loldal'ilesmokestack illustrated in an upright position.

Fig. 7 is an enlarged fragmental view oi. one lego'l the toldablestructures, illustratingone 'Eormot pivotally mounting same upon thedeck of the vessel.

1 represents the hull of a vessel upon which is mounted theafter-cabinor deck house 2, and forward deck house 3. 4: rep resents the navigatorsplatform which, as here illustrated, is employed both while the vesselis being navigatedin open waters, or in canals between hr cs, it beingof the folding type of superstructures. This platform is pivotallymounted upon four angle iron legs 5, which are in turn pivotally mountedupon the deck 7 oi? the vessel. The platform il may be surrounded by anydesired form of removable railing 8, and is preferably provided with oneor more guy lines 9 attached to the aft edge of the structures and tothe deck of the vessel. The platform i is rigged with a suitable blockand tackle 10, which is connected to a fastening in the deck a suitabledistance forward of the platform for raising same into po sition andholding it secure after being raised. The ladder 11 is pivotallyattached to the alter edge of the platform and de signed to raise andlower with the same. I

have illustrated the legs 5 as being of angle iron and supported fromthe deck 7 by clips 12 of similar angle bar, but it is evident thatvarious forms of construction might be resorted to without depz'trting'l rom the spirit ion of theinvention, as an "example the platform frameand legs might be constructed 7 of pipes suitably hinged together, andmade to answer the purpose.

Upon the platform 4 or beneath it in a suitable pit indicated at 23, maybe mounted any form of convenient steering gear or wheel which maybeconnected to the steering chains of the vessel in any desired manner. 7J I At 13, 14,15, and 16 are illustrated the foldable forward mast, sidelights, whistle prise a central upright support indicated by V andafter, nastrespectively, these each comtheir respective numbers and twospaced f flaring leg portions indicated at 1-7, and which givethwartship'strength to eachsupport. V r The feet ofthe legs-arepivotally supported upon the deck 7 of thevessel as illustrated in Fig.7 or in any other practical manner and their upper ends are rigidlyfixed -to-tl1eir respective central members.

To the after side of eachcentral member is attached a suitable stay18composed of rope, pipe or rod as preferred and of a I proper length tomaintain the member in a perpendicular position when raised and pulledtaut by the tackle 19 which is at tached to the forward side of eachmember and leads to'a' suitable 'eyebolt or fastening in, the deck.

The auxiliary smoke stack is represented at 20 and comprises sixpivotally inverted flat metal plates, the after one of which is,

at its base, pivotally attached by a suitable hinge to the de'ck'of thevessel as at 21.

I lV'hen the deck houses 2 and 3 are in place i on deck the auxiliaryfolding stack may re main upright and forln the double stack necessarythrough the deck house 2 and thus become a cooperative part thereof.

In the case of a barge not having propelling power of its own, there maybe a collapsible pivotal working platform such as herein disclosed uponboth ends of the vessel and any other form of deckhouse dispensed with.Thus all of the superstructures of the vessels may be pivotally attachedt0 the deck thereof and be raised and lowered alternately whennavigating canals.

It is known that certain mooring devices such as 'bollards and capstansare constantly required upon the deck of the vessel and these preferablybeing permanently fixed thereon, provide an established height forclearance of the vessel when passing under bridges, and in making theother superstructures of the vessel to be collapsible within suchclearance is all that is necessary to make the vessel applicable to suchnavigation.

The necessity of the lights, whistle and navigating platform beingconsiderably above the upper deck of the vessel is well known in theart, and I have herein provided simple and eflicient means for such, andmethod of manipulating same.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is: 7

An auxiliary smoke stack for sea-going canal boats comprising aplurality of metal plates pivotally united at their longer sides and oneof the plates being pivotally attached to the deck of the boat wherebythe stack may be collapsed and folded upon the deck.

In testimony whereof I hereunto ailix my signature in the presence oftwo witnesses.

ALEXANDER MCDOUGALL.

Vitnesses A; C. DUNN, S. GEO. STEVENS.

